McDonnell Aircraft's F3H Demon™ was the firm's first swept-wing jet fighter. The aircraft was conceived in 1949 as the XF3H-1™, with the first flight taking place in 1951. Unfortunately, the original power plant proved unsatisfactory, though despite this the F3H-1N™ set an unofficial time-to-climb record in 1955 of 10,000 feet in 71...